Physics
Grade-9
Easy
Question
In which of the following media can non-mechanical waves travel?
- In a medium but not in a vacuum
- Neither in a medium nor a vacuum
- In a vacuum as well as in a medium
- In vacuum but not in a medium
Hint:
Non mechanical waves are not dependent on motion of the particles
The correct answer is: In a vacuum as well as in a medium
Since they aren't dependent on particles they can travel in both vacuum and medium
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Which of the following statements is/are correct about waves?
I. Waves are patterns of disturbance that move without the actual physical transfer of flow of matter.
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I. Waves are patterns of disturbance that move without the actual physical transfer of flow of matter.
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iv) Direction of wave propagation and particle motion are perpendicular to each other for transverse waves
Which of the following statements are true?
i) Direction of wave propagation and particle motion are along the same direction for longitudinal waves
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Consider the following statements and select the incorrect statement(s) from the following.
I. Mechanical waves transfer energy and matter both from one point to another.
II. Mechanical waves transfer only energy from one point to another.
III. Mechanical waves transfer only matter from one point to another.
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I. Mechanical waves transfer energy and matter both from one point to another.
II. Mechanical waves transfer only energy from one point to another.
III. Mechanical waves transfer only matter from one point to another.
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Mechanical waves on the surface of a liquid are:
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Which of the following does not require a medium for propagation?
(a) Sound waves
(b) Lightwaves
(c) Water waves
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For which of the following do the longitudinal waves exist?
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Which of the following is carried by waves from one place to another?
Which of the following is carried by waves from one place to another?
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Mechanical Waves cannot travel through:
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Waves that travel perpendicular to the direction of vibrations are known as:
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